摘要
运用反应运移模拟软件PHT3D建立酸法地浸采铀一维模型,阐明强酸低含氧情况下地浸采铀过程中铀水解与迁移的时空演化规律。模拟结果表明,铀矿溶解后,四价铀最多,六价铀次之;矿层水溶液的pe(电位)和pH在时间上的变化与各个液相主要组分的浓度变化相关,pe和pH变化曲线的交点为液相主要组分浓度显著变化的起点;铀矿不仅会溶解也伴随着铀矿微量生成的现象,且溶解沉淀的量与位置有关。
One-dimensional model of in situ uranium acid leaching was established with reaction transport simulation software PHT3Dto clarify temporal and spatial evolution of uranium hydrolysis and migration during in situ uranium leaching under strong acid and low oxygen concentration condition.The simulation results show that uranium dissolution produces the most tetravalence uranium followed by hexavalent uranium as the second;the values of pe(electric potential)and pH of aqueous solution are related to change of concentration of main liquidus components.Curves of pe and pH are related,and the intersection point is the starting point of significant change of main liquidus components concentration.Uranium deposit will not only dissolve but also accompany phenomenon of micro-generation of uranium,and amount of dissolved precipitate is related to position.
作者
陈茜茜
罗跃
李寻
陈经明
周泽超
CHEN Qian-qian;LUO Yue;LI Xun;CHEN Jing-ming;ZHOU Ze-chao(School of Water Resource and Environmental Engineering,East China University of Technology,Nanchang 330013,China;Key of Laboratory of Nuclear Resource and Environment,East China Institute of Technology,Nanchang 330013,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2019年第11期32-37,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
江西省教育厅科技项目（GJJ180380）
东华理工大学核资源与环境重点实验室开放基金项目（NRE1612）
关键词
地浸采铀
酸法浸铀
反应运移模拟
水岩反应
in situ uranium leaching
uranium acid leaching
reaction migration simulation
waterrock reaction
